I would guess two items. Turbo Pedistal orings or EPBV valve... or it's actually fuel and washing all the grime out of the valley and making it appear as oil. The fuel leak stems from the fuel bowl drain valve orings leaking. This is really easy to fix.

As far as a mechanic goes, Fleece performance in North Salem Indiana is a knowledgable bunch. They do mostly upgrades though. In Danville - there's Danville Performance, aka Larry's Auto Service or something like that. I'm sure there's other ones out there.